Mobile terminal with high frequency generator
To alleviate information-dependent behavior by using a mobile terminal of a user of the mobile terminal. A mobile terminal including a first signal generator that generates a frequency signal in the audible band, a second signal generator that generates a high-frequency signal in a frequency band higher than the audible band, a speaker that converts the high-frequency signal into a corresponding high-frequency sound, and a timing controller that controls timing of the generation of the high-frequency signal to be a timing that does not correlate with the timing of the generation of the frequency signal in the audible band is provided.
1. A mobile terminal comprising:
a first signal generator that generates a frequency signal in an audible band;
a second signal generator that generates a high-frequency signal in a frequency band higher than the audible band;
a speaker that converts the high-frequency signal into a corresponding high-frequency sound;
a timing controller that controls timing of the generation of the high-frequency signal to be a timing that does not correlate with a timing of the generation of the frequency signal in the audible band; and
an execution part that executes application software,
wherein the timing controller controls the timing for generating the high-frequency signal on a basis of a state where the execution part is executing application software, and
wherein the timing controller controls the timing for generating the high-frequency signal on the basis of a period of time during which the execution part is continuously executing application software.
2. The mobile terminal according to claim 1 , wherein
the timing controller controls and causes the second signal generator to generate the high-frequency signal when the mobile terminal is turned on and is powered.
3. The mobile terminal according to claim 1 , wherein the timing controller determines whether or not to control the timing for generating the high-frequency signal on a basis of a type of application software being executed by the execution part.
4. The mobile terminal according to claim 1 , wherein the timing controller stops generating the high-frequency signal at a time when the a period of time during which the execution part has been continuously executing application software exceeds a threshold.
5. The mobile terminal according to claim 1 , wherein
the second signal generator has a filter part that passes frequency components in a predetermined frequency band of the high-frequency signal, and outputs the frequency components passed through the filter part as the high-frequency signal.
6. The mobile terminal according to claim 5 , wherein
the filter part has a first filter for passing the frequency components of 32 kHz or less of the high-frequency signal.
7. The mobile terminal according to claim 5 , wherein
the filter part includes a second filter for passing the frequency components higher than 32 kHz of the high-frequency signal.
8. The mobile terminal according to claim 5 , wherein
the filter part includes a first filter for passing the frequency components of 32 kHz or less of the high-frequency signal, and a second filter for passing the frequency components higher than 32 kHz of the high-frequency signal, and
the timing controller further controls whether the second signal generator inputs the high-frequency signal to the first filter or the second filter.
9. The mobile terminal according to claim 8 , further comprising:
an execution part that executes application software, wherein
the timing controller outputs the frequency components passed through a first filter part as the high-frequency signal at a time when a period of time during which the execution part has been continuously executing application software exceeds a threshold.
10. The mobile terminal according to claim 1 , further comprising:
a detection part that detects whether or not a user is close to the speaker, wherein
the timing controller controls the timing for generating the high-frequency signal in accordance with a detection result of the detection part.
11. The mobile terminal according to claim 10 , wherein
the detection part detects that the user is close to the speaker when the detection part detects that the mobile terminal is held by the user.
12. A non-transitory computer readable recording medium storing a program causing a computer to function as the mobile terminal of claim 1 , the program installed in the mobile terminal provided with the speaker for converting the high-frequency sound corresponding to the high-frequency signal in the frequency band higher than the audible band, when executed by the computer.
13. A mobile terminal comprising:
a first signal generator that generates a frequency signal in an audible band;
a second signal generator that generates a high-frequency signal in a frequency band higher than the audible band;
a speaker that converts the high-frequency signal into a corresponding high-frequency sound; and
a timing controller that controls timing of the generation of the high-frequency signal to be a timing that does not correlate with a timing of the generation of the frequency signal in the audible band,
wherein the second signal generator has a filter part that passes frequency components in a predetermined frequency band of the high-frequency signal, and outputs the frequency components passed through the filter part as the high-frequency signal, and
wherein the filter part has a first filter for passing the frequency components of 32 kHz or less of the high-frequency signal.
14. The mobile terminal according to claim 13 , wherein the filter part includes a second filter for passing the frequency components higher than 32 kHz of the high-frequency signal.
15. The mobile terminal according to claim 13 , wherein
the filter part includes a first filter for passing the frequency components of 32 kHz or less of the high-frequency signal, and a second filter for passing the frequency components higher than 32 kHz of the high-frequency signal, and
the timing controller further controls whether the second signal generator inputs the high-frequency signal to the first filter or the second filter.
16. The mobile terminal according to claim 15 , further comprising:
an execution part that executes application software, wherein
the timing controller outputs the frequency components passed through a first filter part as the high-frequency signal at a time when a period of time during which the execution part has been continuously executing application software exceeds a threshold.